BENZILIC ACID FOR SYNTHESIS 98%

BENZILIC ACID FOR SYNTHESIS 98%

BENZILIC ACID

Benzilic acid for synthesis 98 is Off-white powder. Assay (alkalimetric): Min 98%. Melting point: 148 - 152 deg C. Safety Information and Hazard Symbols. Symbol: GHS07

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BENZILIC ACID FOR SYNTHESIS 98%
Part no. RXSOL-60-6604-042

Description

Benzilic acid for synthesis 98 is Off-white powder. Assay (alkalimetric): Min 98%. Melting point: 148 - 152 deg C. Safety Information and Hazard Symbols. Symbol: GHS07

Application

Benzilic acid is used in the manufacture of glycollate pharmaceuticals including clidinium, dilantin, flutropium, and mepenzolate which are antagonists of the muscarinic acetylcholine receptors.

Technical specification

 Information on basic physical and chemical properties
Physical state at 20 °C :                                                                      Liquid.
Odour :                                                                            Strong, vinegar-like
Odour threshold :                                                              No data available.
pH value :                                                                          No data available.
Melting point [°C] :                                                                              16.2 °C
Decomposition point [°C] :                                                                        N/A
Critical temperature [°C] :                                                                          N/A 
Auto-ignition temperature [°C] :                                                             485 °C
Flammability (solid, gas) :                                                                         N/A
Flammable liquid and vapour.
Flash point [°C] :                                                                                    40°C
Boiling point [°C] :                                                                       117 - 118 °C
Initial boiling point [°C] :                                                                       117°C
Final boiling point [°C] :                                                                        118°C
Evaporation rate :                                                                                    0,97
Vapour pressure [20°C] :                                                     15.2 hPa at 20°C
Vapour pressure mm/Hg :                                                                         N/A
Vapour density :                                                                                         2,1
Density [g/cm3] :                                                                                    1,049
Relative density, gas (air=1) :                                                                   N/A
Relative density, liquid (water=1) :                                                            N/A
Solubility in water [% weight] :                                                         Complete
Solubility in water :                                                                                    N/A
Log Pow octanol / water at 20°C :                                     No data available.
Solubility :                                                                                                  2,4
Viscosity at 40°C [mm2/s] :                                                                       N/A
Explosive properties :                                                                                N/A
Explosion limits - upper [%] :                                                               19,90%
Explosion limits - lower [%] :                                                                       4%
Oxidising properties :                                                            No data available.

Notes

1. If the reaction mixture is heated to boiling, large quantities of benzohydrol are obtained. The temperature reached by heating on the steam bath is about 85–90°.
2. The high purity of the product obtained by this procedure really makes recrystallization unnecessary. Should further purification be desired it is best effected by crystallization from benzene. It may also be accomplished by crystallizing from hot water with the use of animal charcoal or by dissolving in alkali and reprecipitating by means of hydrochloric acid.

Procedure

The benzilic acid rearrangement is formally the 1,2-rearrangement of 1,2-diketones to form α-hydroxy–carboxylic acids using a base. This reaction receives its name from the reaction of benzil with potassium hydroxide to form benzilic acid.

Other names

BENZILIC ACID FOR SYNTHESIS 98%, BENZILIC ACID 98%, BENZILIC ACID

Packing & supply

Supply locations

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